Wrench



Aug. 8, 1933. P. FORTE 1,921,322

WRENCH Filed Aug. 18, 1930 i that engagement of the slider in thethreads of Patented Au ie, I I {I I. i ,uNiTeotsrA sPA ENT oFFic -g jPierre P0rte,-' Viroflay, France" 1 Claim. (01.81 161; 7

This invention relates to improvements in 1,.an extension sheath 11 isprovided for the wrenches, especially wrenches for turningnuts outer endportion of the shank and which exand for doing similarwork, the objectof the, intends from the frame 18 and is provided in'one vention being'to provide an improved wrench side with'alongitudinal slot 19. A; pinpro- 5 of this kind which is simple in construction,-is jects fro-(noneside ofthe shank and is arranged strongand durable, which can be readilyopto move longitudinally in said slot and is proerated and is not likelyto'get out of order. vided at its outer end with a knob 21which can Withthe above and other objects in view, the be grasped by the user of theWrench for efiect- V invention consists in'the construction, combinaing.the'rnovement of the jaw 4 with one hand- 10 tion and arrangement ofdevices hereinafter deonly. V V e scribed and claimed. In the form; ofthe invention shown in Figure In the accompanying drawing 2, the sheath11 of Figure 1 is dispensed with Figure 1 is a side elevation of awrench conand the outer end of the shrank is somewhat structed andarrangedv in accordance with this, widened and roundedto'facilitat'e thegrasping 5 invention; thereof. Y

Figure 2 is a similar view of a modified form 'In the form ofthe'invention shownin Figure of the wrench. v I .3, the movable jaw 24operates in an open notch I Figure 3 is a similar view of anothermodified with which the firstjjaw 121 is provided, said] form of thewrench. .jaw having in addition to thehandle shank 122 I 2 V Figure 4 isa transverse sectional view, of the a; shank member 33 havingflatopposite ide nd form of Wrench Shown in Figure 1.. also havingconvex threaded edges and the slider Figure 5 is a detail longitudinalsectional view 28 operates in an opening directly in th m of thecylindrical slider. able jaw 24 which is in all respects identical with,

y p d Wrench mp e a l 1 haV theopening in the frame of the jaw 4 shown 2ing a Shank 2 which Presents tWO 1 1 1313fi Figures 1 and 2 andhereinafter described.

Sides and tWO p s OOIIVBX u a es 3 w i Having thus described myinvention, I claimrf are provided with screw threads. ,A jaw 4 is ar-Alwrench f r a nut comprising a jaw having a a to Slide on e shanktoward and from, shank presenting two opposedfiat sides'and two jaw 1and is provided a frame oppo ed convex' urfaces conngcting' the flat iprovided h a tr v s en and 6 sides, and provided with screw. threads, "ajaw groove, 16 in one longitudinal side of Said s having a frame whichslides on the said shaft .ing extending thereacross and a recess 17formand is provided with a trailsverseiopeni'ng, a ing a 11013011 av131F163 pp i of said Open cess in one longitudinal side of'the openingforr'nj I ing .anotch and a groove extending; acrossthe ing. v s

5 .A cylindrical sliderii'is arranged in said open- Oppositelongitudinal side f id pe ning a y- 1 ing and h interior interrulltedv hd 14 'lindrical slider arranged'in said opening andpreto Cooperate withe threads of the shank n senting threads interrupted to cooperate withthe the slider s in one Position and to cause the jaw threads of thesaid shankwhen the slider is in to move so as to. disengage'the threadsof the one position and/GO disengagelthe threads "1100 Shank when hSlider ism another position- The the shank when the slider is in anotherposition, V

slider has a spur15 on its circumference movsaid sliderhaving a on itscircumference v able across the groove 16 and engageable in the movableacross the groove (if the said side of the notch. 17 of the f casing toStop m opening, and engageable in the notch of the 4 tion of the sliderso that the latter may execute frame tostop rotation of, the slider, '50that the an almost complete 9 l I 'slider may execute-an almost completerotation, At.the ends of i the frame 18 1S sprin s exerting from eachend of t e. slider a prqvlded on opposite sldes Wlth i 1O pressuresuch-thatif the locking is not affected Whlch form lateral enlargementsof Sam i during the "first partial rotation it maybe com- 50 CoilSprings 9 are at opposlte ends of thefihder pleted during the secondpartial rotation, and so and P between the same andthe ends thatengagement of the slider in the'threadsof openmg and. exert each enq-sofh the "said shank may be assured by a li ht com pressure. Such that If h1ocku lgl1 s m pression of thesprings in the event that the fected durmgthe first partlalwrotatmn. lt'may be thread of the said-slider sould notimmediately" caused during the second partial rotat on, and so 1 PIERREPORTE; the shank may be assured by a light compres- I I I sion of thesprings in the event that the threads of the slider should notimmediatelyengage those I of the shank.

engage those of the shank. 11

6 Inthe form of the invention shown inFigure" f I J e a 1 a

